Male Betta.

Care level

Beginner

Temperament

Semi aggressive

Adult size

3"

Min tank size

5 gallons

Diet

Carnivore

Scientific name

Betta splendens

Stock and individual temperament vary — call (814) 456-9445 for pairing advice before you buy.

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  Bronze Cory

  Well-documented bottom-dwelling companions. Their bony scutes provide genuine physical protection against betta nips. They occupy the substrate zone while bettas patrol mid-to-upper water, eliminating most territory overlap. Must be kept in groups of 6+ in a 10-gallon minimum tank; water parameters (pH 6.0–7.8, temp 74–80°F) overlap comfortably with betta requirements. Individual betta temperament remains the main variable, so a densely planted tank with sight-line breaks is strongly recommended.

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  Harlequin Rasbora

  Fast-moving, peaceful mid-water schoolers whose muted orange-and-black patterning is documented as non-triggering for most bettas. No fin-nipping tendency reported. Keep in groups of 8–10 in a 10–15 gallon minimum. Multiple independent authorities list this as one of the safest active schooling companions for a male betta.

• K

  Kuhli Loach

  Nocturnal scavengers that burrow and hide during daylight hours, placing them on the opposite activity schedule from a diurnal betta and minimizing encounters. Water parameters align well (pH 6.0–7.5, temp 76–82°F). A 20-gallon minimum with abundant hiding spots is required for comfortable coexistence. Important correction to the original claim: this pairing is NOT safe with aggressive individual bettas — research confirms aggressive bettas will harass kuhli loaches into stress and disease. Recommend only for demonstrably calm betta specimens.

• N

  Nerite Snail

  Hard, thick shells deflect betta nips effectively, and slow deliberate movement rarely triggers sustained predatory interest. Most bettas investigate for a day or two then ignore them entirely. Some aggressive bettas do nip snail antennae, but nerite antennae regenerate and the snail's life is not threatened. No water-parameter conflict; 5-gallon minimum sufficient. One of the lowest-risk invertebrate pairings for a betta tank.

• M

  Malaysian Trumpet Snail

  Primarily nocturnal and spend daylight hours burrowed in the substrate — the inverse of a betta's activity window — so direct encounters are rare. Hard operculum provides protection when exposed. Bettas typically ignore them. The only management concern is population growth if the tank is overfed; this is a husbandry issue, not a compatibility or safety issue, and is controlled by reducing excess food.